EP 3484817 A1 20190522 - CARBON DIOXIDE CAPTURE AND CONVERSION METHODS AND SYSTEMS
Title (en)
CARBON DIOXIDE CAPTURE AND CONVERSION METHODS AND SYSTEMS
Title (de)
KOHLENDIOXIDABSCHEIDUNG SOWIE UMWANDLUNGSVERFAHREN UND -SYSTEME
Title (fr)
PROCÉDÉS ET SYSTÈMES DE CAPTURE ET DE CONVERSION DE DIOXYDE DE CARBONE
Publication
Application
Priority
- GB 201612102 A 20160712
- GB 2017052035 W 20170712
Abstract (en)
[origin: WO2018011567A1] The present invention provides a method of mineralisation of carbon dioxide. The method comprises forming an alkaline aqueous solution containing carbonate anions by dissolving the carbon dioxide and an alkali such as ammonia in water. Next, the method comprises mixing the alkaline aqueous solution with a water source (such as a connate/formation brine or produced water or industrial waste waters or re-constituted mineral-bearing waters) containing magnesium and calcium cations. A first product (e.g. PCC) containing calcium cations and carbonate anions is precipitated in a first precipitation step at a first pH (e.g. around pH7.5) and then a second product (e.g. nesquehonite (NQ) a type of PMC) containing magnesium cations and carbonate anions is precipitated in a second precipitation step at a second, higher pH e.g. around pH 9.5.
IPC 8 full level
C01B 32/60 (2017.01); C01F 5/24 (2006.01); C01F 11/18 (2006.01)
CPC (source: EP US)
B01D 53/1475 (2013.01 - US); B01D 53/1493 (2013.01 - US); B01D 53/78 (2013.01 - US); C01B 32/60 (2017.07 - EP US); C01F 5/24 (2013.01 - EP US); C01F 11/18 (2013.01 - EP US); C01F 11/181 (2013.01 - EP US); F25J 3/0266 (2013.01 - US); B01D 2252/102 (2013.01 - US); B01D 2257/504 (2013.01 - US); B01D 2258/0233 (2013.01 - US); B01D 2258/025 (2013.01 - US); B01D 2258/0283 (2013.01 - US); Y02C 20/40 (2020.08 - EP)
Citation (search report)
See references of WO 2018011567A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2018011567 A1 20180118; EP 3484817 A1 20190522; GB 201612102 D0 20160824; JP 2019527178 A 20190926; US 2019232216 A1 20190801
DOCDB simple family (application)
GB 2017052035 W 20170712; EP 17742510 A 20170712; GB 201612102 A 20160712; JP 2018567677 A 20170712; US 201716312082 A 20170712